CN114760654A - CSI reporting method and device - Google Patents

CSI reporting method and device Download PDF

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Publication number
CN114760654A
CN114760654A CN202110028635.2A CN202110028635A CN114760654A CN 114760654 A CN114760654 A CN 114760654A CN 202110028635 A CN202110028635 A CN 202110028635A CN 114760654 A CN114760654 A CN 114760654A
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Prior art keywords
information
csi
csi report
type
network
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CN202110028635.2A
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Chinese (zh)
Inventor
王化磊
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Priority to CN202110028635.2A priority Critical patent/CN114760654A/en
Priority to US18/260,698 priority patent/US20240063868A1/en
Priority to PCT/CN2022/074885 priority patent/WO2022148490A1/en
Publication of CN114760654A publication Critical patent/CN114760654A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0658—Feedback reduction

Abstract

The embodiment of the application discloses a CSI reporting method and a device, wherein the method comprises the following steps: the terminal equipment receives network configuration information sent by the network equipment, acquires a CSI report based on the network configuration information, and reports the CSI report, so that the terminal equipment can report the compressed channel information and/or interference measurement result obtained and compressed according to the network configuration information to the network equipment in the scene of supporting intelligent CSI feedback, and the technical scheme of reporting the CSI report in the scene of supporting intelligent CSI feedback is realized.

Description

CSI reporting method and device
Technical Field
The present application relates to the field of communications technologies, and in particular, to a CSI reporting method and apparatus.
Background
NR 15/16/17 supports Type I and Type II codebooks as well as enhanced Type II and funther enhanced Type II codebooks, wherein the basic principle of Type I codebook feedback is that UE matches a codebook specified by a protocol with an estimated ground channel, selects a codebook of the most matched channel, and then feeds back an index corresponding to the codebook to a network side; the basic principle of the Type II codebook and the enhancement thereof is to adopt high-resolution CSI feedback to carry out certain processing on an estimated ground channel, thereby feeding back processed ground information including the quantization of amplitude and phase.
The introduction of artificial intelligence technology, i.e. support of intelligent CSI feedback, in the CSI layer is being widely discussed in the industry, but there is no specific solution for what information should be specifically included in a CSI report after the introduction of an intelligent module.
Disclosure of Invention
The embodiment of the application discloses a CSI reporting method and a CSI reporting device, and provides a technical scheme for reporting a CSI report comprising compressed channel information and an interference measurement result under an intelligent CSI feedback supporting scene.
In a first aspect, an embodiment of the present application provides a method for reporting CSI, where the method is applied to a terminal device, and the method includes:
receiving network configuration information sent by network equipment;
acquiring a CSI report based on the network configuration information, wherein the CSI report comprises compressed channel information and/or interference measurement results;
and reporting the CSI report to the network equipment.
In a second aspect, an embodiment of the present application provides a CSI reporting method, which is applied to a network device, and the method includes:
sending network configuration information to the terminal equipment;
and receiving a CSI report from the terminal equipment, wherein the CSI report comprises compressed channel information and/or interference measurement results.
In a third aspect, an embodiment of the present application provides a CSI reporting apparatus, which is applied to a terminal device, and the apparatus includes:
the receiving and sending unit is used for receiving network configuration information sent by the network equipment;
a processing unit, configured to obtain a CSI report based on the network configuration information, where the CSI report includes compressed channel information and/or interference measurement results;
the transceiver unit is further configured to report the CSI report to the network device.
In a fourth aspect, an embodiment of the present application provides a CSI reporting apparatus, which is applied to a network device, and the apparatus includes:
the receiving and sending unit is used for sending network configuration information to the terminal equipment;
the transceiver unit is further configured to receive a CSI report from the terminal device, where the CSI report includes compressed channel information and/or interference measurement results.
In a fifth aspect, an electronic device is provided, comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps of the methods of the first and second aspects.
A sixth aspect provides a computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method of the first and second aspects.
In a seventh aspect, a computer program product is provided, where the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps described in the first and second aspects of the embodiments of the present application. The computer program product may be a software installation package.
In an eighth aspect, a chip system is provided, the chip system comprising at least one processor, a memory and an interface circuit, the memory, the transceiver and the at least one processor being interconnected by a line, the at least one memory having a computer program stored therein; the computer program, when executed by the processor, implements the methods of the first and second aspects.
According to the technical scheme, the terminal equipment receives the network configuration information sent by the network equipment, the CSI report is obtained based on the network configuration information, the CSI report comprises compressed channel information and/or interference measurement results, and then the terminal equipment reports the CSI report, so that the terminal equipment can report the compressed channel information and the interference measurement results obtained according to the network configuration information to the network equipment in the situation of supporting intelligent CSI feedback, and the technical scheme of reporting the CSI report in the situation of supporting intelligent CSI feedback is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;
fig. 2 is a flowchart illustrating a method for reporting CSI according to an embodiment of the present application;
fig. 3 is a flowchart illustrating another CSI reporting method according to an embodiment of the present application;
fig. 4 is a flowchart illustrating another CSI reporting method according to an embodiment of the present application;
fig. 5 is a flowchart illustrating another CSI reporting method according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a CSI reporting apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings.
It should be understood that the technical solution of the embodiment of the present application may be applied to a Global System for Mobile Communication (CSM), a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Worldwide Interoperability for Microwave Access (Wi-MAX) System, a Long Term Evolution (Long Term Evolution, LTE) System, a 5G Communication System (e.g., New Radio, NR)), a Communication System in which Multiple Communication technologies are merged (e.g., a Communication System in which an LTE technology and an NR technology are merged), or various future Communication systems, e.g., a 6G Communication System, a 7G Communication System, and the like, and the embodiment of the present application is not limited thereto. The technical solution of the embodiment of the present application is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-any-object communication (Vehicle-to-event) architecture, and the like.
The embodiment of the application relates to terminal equipment. The terminal device includes a device with a wireless communication function, and the terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The terminal device may also be a handheld device with a wireless communication function, an in-vehicle device, a wearable device, a computer device or other processing device connected to a wireless modem, a terminal device in a future 5G Network, or a terminal device in a Public Land Mobile Network (PLMN) for future evolution, and the like. The terminal devices in different networks may be called different names, for example: user equipment, access terminal, subscriber unit, subscriber Station, Mobile Station (MS), remote Station, remote terminal, Mobile device, user terminal, Wireless communication device, user agent or user equipment, cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, Wireless Local Loop (WLL) Station, Personal Digital Assistant (PDA), terminal device in a 5G network or future evolution network, and the like, which are not limited in this embodiment of the present application.
The embodiment of the application relates to a network device. The Network device may be a device for communicating with the terminal device, and includes a device of a Radio Access Network (RAN), a base station controller of the RAN, and a device on a core Network side. For example, the network device may be a base station of a RAN on an access network side in a cellular network, including but not limited to: evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home evolved Node B, or Home Node B, HNB), baseband Unit (BBU), Management Entity (Mobility Management Entity, MME); for another example, the Network device may also be a node device in a Wireless Local Area Network (WLAN), such as an Access Controller (AC), a gateway, or a WIFI Access Point (AP); for another example, the network device may also be an access network device (e.g., a gNB, a CU, a DU) in an NR system, and a node B (ng-eNB) that continues to evolve, where the gNB and the terminal device communicate with each other by using an NR technology, the ng-eNB and the terminal device communicate with each other by using an E-utra (evolved Universal Radio access) technology, and both the gNB and the ng-eNB may be connected to a 5G core network. The network device in the embodiment of the present application also includes a device or the like that provides a base station function in a future new communication system.
Referring to fig. 1, fig. 1 is a schematic diagram of a communication system according to an embodiment of the present disclosure. As shown in fig. 1, the communication system includes a network device and a terminal device, and the description is given by taking b-3 as an example. The network device can provide wireless access service for the terminal device, each network device corresponds to a service coverage area, and the terminal device entering the area can communicate with the network device through wireless signals. In addition, the network devices can also communicate with each other.
Based on the system architecture shown in fig. 1, after the CSI measurement is performed by the terminal device, CSI reporting may be performed, where the CSI reporting may be implemented by sending a CSI report to the network device, and the CSI report may include a CSI measurement result of the terminal device. The network device may perform scheduling adjustment and/or beam management related work according to the reported content.
The introduction of artificial intelligence techniques at the CSI level, i.e., supporting intelligent CSI feedback, is being widely discussed in the industry. The method specifically comprises the following steps: the terminal side carries out channel estimation based on the CSI-RS to obtain downlink channel information; introducing an intelligent module at a terminal side, compressing downlink channel information, and feeding the compressed channel information back to a network side; and the network side recovers the compressed channel information by using the intelligent module. By the method, the feedback overhead of the terminal can be effectively reduced, and meanwhile, compared with the existing CSI feedback mechanism, the network side can acquire the channel information with high precision. However, there is no specific solution for what information the CSI report should specifically contain after the introduction of the intelligent module.
In order to solve the above problem, an embodiment of the present application provides a CSI reporting method, in which a terminal device obtains a CSI report based on network configuration information, the CSI report includes compressed channel information and/or interference measurement results, and then reports the CSI report, so that the terminal device can report the channel information and/or the interference measurement results, which are obtained and compressed according to the network configuration information, to the network device in a scenario of supporting intelligent CSI feedback, thereby implementing a technical scheme of reporting the CSI report in the scenario of supporting intelligent CSI feedback.
In order to make those skilled in the art better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Referring to fig. 2, fig. 2 provides a method for reporting CSI, which may be performed in the communication system shown in fig. 1, and the method includes the following steps:
S210, the network equipment sends network configuration information to the terminal equipment.
Before the terminal device performs CSI measurement and CSI reporting, the network device may send network configuration information to the terminal device, and the terminal device may perform CSI measurement and CSI reporting according to the network configuration information.
Optionally, the network configuration information is CSI report configuration information, where the CSI report configuration information includes explicit or implicit indication information, and the indication information is used to indicate a type of a CSI measurement result that an associated CSI report should include.
The network configuration information may be CSI-report configuration (CSI-reportConfig) information configured by a Radio Resource Control (RRC) higher layer. The CSI report configuration information includes relevant configuration parameters for CSI reporting. For example, the CSI report configuration information includes indication information, and according to the indication information, the terminal device may know the type of the CSI measurement result in the CSI report reported this time.
Optionally, the types of the CSI measurement result include type 1 and type 2, where the type 1 is a type that is already supported by an existing standard, that is, a type without channel information compression, and the type 2 is a type that supports channel information compression.
In this embodiment of the application, in a CSI feedback scenario supporting intellectualization, that is, when a CSI measurement result is a type supporting channel information compression, the CSI report may not include related reported information such as a Rank Indicator (RI), a Layer Indicator (LI), a Precoding Matrix Indicator (PMI), a CSI reference signal Resource Indicator (CRI), or a Channel Quality Indicator (CQI). The compressed channel message may be directly included in the CSI report.
The displayed indication information may be indicated by using 1 bit, and may also be other bit numbers, for example, for the types of the 2 CSI measurement results, the indication information that the CSI measurement result is type 1 may take a value of 0; the indication information with CSI measurement result type 2 may take a value of 1. Exemplarily, the CSI measurement result is the indication information of type 1, which may take the value of 1; the indication information with CSI measurement result type 2 may take a value of 0.
The implicit indication information may be report Quantity, and the terminal device implicitly obtains the type of the CSI measurement result according to the specific content of the report Quantity. For example, for the types of the 2 CSI measurement results, the indication information that the CSI measurement result is type 1 may take a value of 0; the indication information with CSI measurement result type 2 may take a value of 1. Exemplarily, the CSI measurement result is the indication information of type 1, which may take the value of 1; the indication information with CSI measurement result type 2 may take a value of 0.
In a possible implementation manner, the CSI report configuration information further includes information of the number of receiving antennas of the terminal device.
The network device configures the number information of the receiving antennas of the terminal device, and the terminal device can obtain the input length information and/or the output length information of the compression module according to the number information of the receiving antennas.
In a possible implementation manner, the CSI report configuration information further includes input length information and/or output length information of the compression module.
The input length information and/or the output length information of the compression module are determined according to the capability information reported by the terminal equipment.
Specifically, after the terminal device is powered on, the capability information of the terminal device may be reported to the network device. The network device configures the input length information and/or the output length information of the compression module which can be supported by the terminal device for the terminal device according to the capability information reported by the terminal device, so that the input length information and/or the output length information of the compression module configured by the network device conform to the capability of the terminal device.
S220, the terminal equipment receives the network configuration information sent by the network equipment and acquires a CSI report based on the network configuration information, wherein the CSI report comprises compressed channel information and/or interference measurement results.
In the embodiment of the application, the terminal equipment carries out channel estimation according to the network configuration information to obtain downlink channel information; and compressing the downlink channel information by using a compression module to obtain compressed channel information, and then loading the compressed channel information and the interference measurement result obtained by measurement in a CSI report.
Optionally, the CSI report is divided into a part 1 and a part 2, and the CSI report includes compressed channel information and/or interference measurement results obtained by the terminal device in an intelligent CSI feedback scenario, so that the terminal device can report the CSI report including the compressed channel information and/or interference measurement results, thereby implementing a technical scheme for supporting CSI report reporting in an intelligent CSI feedback scenario.
In one possible implementation, the part 1 includes the compressed channel information; the part 2 comprises a group 0 and/or a group 1, the group 0 comprising interference measurements based on channel state information interference management, CSI-IM, and the group 1 comprising interference measurements based on non-zero power channel state information reference signals, NZP, CSI-RS.
Under the scenario of supporting intelligent CSI feedback, a CSI report acquired by the terminal device according to the network configuration information can be composed of two parts. Part 1 comprises compressed Channel information, e.g. a Channel (Channel), and part 2 comprises interference measurements.
Wherein the resource information associated with the CSI report configuration information includes resources for interference measurement
nzp-CSI-RS and/or CSI-IM. When the terminal device is configured with CSI-IM, the CSI-IM based measurement result can be included in the CSI report part 2; when the terminal device is configured with nzp-CSI-RS, nzp-CSI-RS based measurement results may be included in part 2 of the CSI report; when the terminal device is configured with CSI-IM and nzp-CSI-RS, the CSI-IM based measurement result and the nzp-CSI-RS based measurement result may be included in part 2 of the CSI report.
Optionally, the part 1 further comprises input length information and/or output length information of the compression module.
Wherein, the part 1 may also contain input length information and/or output length information of the compression module of the terminal device. The input length information and/or the output length information of the compression module may be the input length information and/or the output length information of the compression module in the CSI report configuration information configured by the network device. The method specifically comprises the following steps: the terminal equipment reports the capability information to the network equipment before receiving the network configuration information sent by the network equipment, and the network equipment configures the input length information and/or the output length information of the compression module which can be supported by the terminal equipment according to the capability information reported by the terminal equipment.
Optionally, the method further includes: and according to the receiving antenna number information, the terminal equipment determines the input length information and/or the output length information of the compression module.
Specifically, the network device configures the number information of the receiving antennas of the terminal device in the CSI report configuration information, and determines the input length information and/or the output length information of the compression module according to the number information of the receiving antennas, and reports the information to the network device through the CSI report.
In one possible implementation, the portion 1 comprises input length information and/or output length information of the compression module; the portion 2 comprises the compressed channel information and/or the interference measurement results.
In this embodiment, in the CSI report, the size of the part 1 load is fixed, the part 1 includes input length information and/or output length information of a compression module, and the part 2 includes the compressed channel information and/or the interference measurement result. The interference measurement result comprises an interference measurement result based on CSI-IM and/or an interference measurement result based on NZP CSI-RS.
In a possible implementation, the part 1 comprises input length information and/or output length information of a compression module, and/or the interference measurement result; the portion 2 includes the compressed channel information.
In one possible implementation, the portion 1 includes the compressed channel information; the part 2 comprises input length information and/or output length information of the compression module and/or the interference measurement result.
In one possible implementation, the part 1 includes the compressed channel information and/or the interference measurement result; the part 2 comprises input length information and/or output length information of the compression module.
In one possible implementation, the part 1 includes a group 0 and/or a group 1, the group 0 includes interference measurement results based on channel state information interference measurement CSI-IM, the group 1 includes interference measurement results based on non-zero power channel state information reference signal NZP CSI-RS; the portion 2 includes the compressed channel information.
Wherein said part 2 further comprises input length information and/or output length information of the compression module.
In one possible implementation, the method further includes: before reporting the CSI report to the network device, if uplink feedback resources are limited, preferentially discarding part 2 with a low priority or a high priority according to a first priority order, where the first priority order is: group 0 > group 1.
In a specific implementation, when uplink feedback resources are limited, in order to reduce feedback overhead of the terminal device, the terminal device may select to partially or completely discard part 2 in the CSI report. Of course, under other conditions, the terminal device may also select to discard part 2 of the CSI report partially or completely, for example, after receiving a discard command from the network device.
Wherein, when part 2 in the CSI report is dropped partially or entirely, part 2 of low priority may be dropped preferentially, or part 2 of high priority may be dropped preferentially. For example, when group 0 and group 1 are included in part 2, group 1 may be preferentially discarded or group 0 may be preferentially discarded; when no interference measurement results are included in part 2, part 2 may be discarded in its entirety.
It should be noted that the above priority may be used when discarding the group in the part 2, and of course, in practical application, other scenarios may also be adopted, such as determining the measurement order according to the priority, and the like.
In one possible implementation, the method further includes: before reporting the CSI report to the network device, if uplink feedback resources are limited, discarding some or all of the CSI reports with a low priority or a high priority according to a second priority order, where the second priority order is: type 2 part 1 ≧ type 1 part 1 ≧ type 2 part 2 ≧ type 1 part 2.
In a specific implementation, when uplink feedback resources are limited, the terminal device may choose to discard the CSI report in order to reduce feedback overhead of the terminal device. Of course, the terminal device may also choose to discard the CSI report under other conditions, for example, after receiving a discard command from the network device.
Wherein, when dropping the CSI report, part 2 in the CSI report or part 1 in the CSI report may be dropped preferentially. For example, when the terminal device needs to report the CSI report a and the CSI report B with the same CSI measurement result type, the terminal device may select to discard the part 1 in the CSI report a and the CSI report B first, and then discard the part 2 in the CSI report a and the CSI report B; or part 2 in the CSI report A and the CSI report B is discarded first, and part 1 in the CSI report A and the CSI report B is discarded later.
Further, when the types of CSI measurement results are different, the terminal device may preferentially drop a CSI measurement result of a low priority, or preferentially drop a CSI measurement result of a high priority. The priority order is: CSI report with CSI measurement result of type 1>CSI report with CSI measurement result of type 2, priority Pri of the CSI reportiCSI(y, k, c, s) may be specifically exemplified as:
PriiCSI(y,k,c,s)＝2*Ncells*Ms*y+Ncells*Ms*k+Ms*c+s
wherein, for the aperiodic CSI report which is scheduled to be loaded on the PUSCH, the value of y is 0; for the CSI report which is scheduled and carried on the PUSCH and is subjected to semi-persistent scheduling, the value of y is 1; for the semi-persistent scheduling CSI report which is scheduled to be carried on the PUCCH, the value of y is 2; for the periodic CSI report scheduled to be carried on PUCCH, the value of y is 3. C is a cell index value, N cellsIs the value of the number of the service cells of the maxNrofServinCells of the high-level parameter. S is reportConfigID, M of CSI report configuration IDsIs the value of the configuration number of the maxNrofCSI-reports configuration of the high-layer parameter. The k is the type of the measurement parameter of the terminal equipment, and the value of the k is 0 for the CSI report carrying L1-RSRP or L1-SINR; for CSI reports carrying non-L1-RSRP or L1-SINR, the value of k is 1. If one CSI reports A associated PriiCSI(y, k, c, s) having a value of less than oneCSI report B associated PriiCSIAnd (y, k, c, s) is taken, the priority of the CSI report A is higher than that of the CSI report B.
Exemplarily, when the terminal device needs to report the CSI report with the CSI measurement result type of type 2 and the CSI report with the CSI measurement result type of type 1, the terminal device may select to discard part 2 of the CSI report with the CSI measurement result type of type 1 first; if the uplink feedback resource is still insufficient, the terminal equipment can discard part 2 in the CSI report with the CSI measurement result type of type 2; if the uplink feedback resource is still insufficient, discarding part 1 in the CSI report with the CSI measurement result type of type 1; and if the uplink feedback resources are still insufficient, finally discarding the part 1 in the CSI report with the CSI measurement result type of type 2.
Exemplarily, when the terminal device needs to report the CSI report with the CSI measurement result type of type 2 and the CSI report with the CSI measurement result type of type 1, the terminal device may select to discard part 1 of the CSI report with the CSI measurement result type of type 2 first; if the uplink feedback resources are still insufficient, the terminal device may discard part 1 of the CSI report with the CSI measurement result type of type 1; if the uplink feedback resources are still insufficient, discarding part 2 in the CSI report with the CSI measurement result type of type 2; and if the uplink feedback resources are still insufficient, finally discarding the part 2 in the CSI report with the CSI measurement result type of type 1.
It should be noted that the priority can be used for discarding the group in the CSI report, and in practical applications, other scenarios may also be adopted, for example, determining the measurement order according to the priority, and the like.
And S230, the terminal equipment reports the CSI report to the network equipment.
Specifically, after acquiring the CSI report, the terminal device reports the CSI report to the network device.
S240, the network equipment receives the CSI report from the terminal equipment.
Correspondingly, the network equipment receives the CSI report sent by the terminal equipment, and then recovers the compressed channel information by using the compression model. By the method, the feedback overhead of the terminal can be effectively reduced, and meanwhile, compared with the existing CSI feedback mechanism, the network equipment can acquire the channel information with high precision.
As can be seen, in the CSI reporting method provided in the embodiment of the present application, the terminal device receives network configuration information sent by the network device, obtains a CSI report based on the network configuration information, where the CSI report includes compressed channel information and/or interference measurement results, and then reports the CSI report, so that the terminal device can report the channel information and/or the interference measurement results, which are obtained and compressed according to the network configuration information, to the network device in a scenario supporting intelligent CSI feedback, thereby implementing a technical scheme for reporting a CSI report in a scenario supporting intelligent CSI feedback.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for reporting CSI according to an embodiment of the present invention, where the method may be implemented in a network architecture as shown in fig. 1, and the method includes the following steps:
s310, the network equipment sends network configuration information to the terminal equipment;
s320, the terminal equipment receives network configuration information sent by the network equipment and acquires a CSI report based on the network configuration information, wherein the CSI report comprises a part 1 and a part 2, the part 1 comprises compressed channel information, and the part 2 comprises a group 0 and/or a group 1;
s330, when the uplink feedback resources are limited, preferentially discarding the CSI reports with low priority or high priority, wherein the priority order is as follows: part 1 of type 2 ≧ part 1 of type 1 ≧ part 2 of type 2 ≧ part 2 of type 1;
S340, the terminal equipment reports the CSI report to the network equipment;
and S350, the network equipment receives the CSI report.
The group 0 includes interference measurement results of interference measurement CSI-IM based on channel state information, and the group 1 includes interference measurement results of interference measurement based on non-zero power channel state information reference signal NZP CSI-RS. The above-mentioned part 1 may also comprise input length information and/or output length information of the compression module.
The detailed description of the steps S310 to S350 may refer to the corresponding steps described in the above fig. 2, and will not be described herein again.
The technical scheme provided by the embodiment of the application realizes the technical scheme of reporting the CSI report in the scene of supporting intelligent CSI feedback, and the CSI report comprises compressed channel information and/or interference measurement results, so that the feedback overhead of the terminal can be effectively reduced; and when uplink resources are limited, the CSI reports can be discarded according to the priority order, so that the network quality is improved.
Referring to fig. 4, fig. 4 is a flowchart illustrating a method for reporting CSI according to an embodiment of the present application, where the method may be implemented under the network architecture shown in fig. 1, and the method includes the following steps:
s410, the network equipment sends network configuration information to the terminal equipment;
S420, the terminal equipment receives network configuration information sent by the network equipment, and acquires a CSI report based on the network configuration information, wherein the CSI report comprises a part 1 and a part 2, the part 1 comprises input length information and/or output length information of a compression module, and the part 2 comprises compressed channel information and/or interference measurement results;
s430, when the uplink feedback resource is limited, the CSI reports with low priority or high priority are discarded in priority order, and the priority order is as follows: part 1 of type 2 ≧ part 1 of type 1 ≧ part 2 of type 2 ≧ part 2 of type 1;
s440, the terminal equipment reports the CSI report to the network equipment;
s450, the network equipment receives the CSI report.
The specific description of the steps S410 to S450 may refer to the corresponding steps described in fig. 2, and will not be described herein again.
The technical scheme provided by the embodiment of the application realizes the technical scheme of reporting the CSI report in the scene of supporting intelligent CSI feedback, and the CSI report comprises compressed channel information and/or interference measurement results, so that the feedback overhead of the terminal can be effectively reduced; and when uplink resources are limited, the CSI reports can be discarded according to the priority order, so that the network quality is improved.
Referring to fig. 5, fig. 5 is a flowchart illustrating a method for reporting CSI according to an embodiment of the present invention, where the method may be implemented in a network architecture as shown in fig. 1, and the method includes the following steps:
s510, the network equipment sends network configuration information to the terminal equipment;
s520, the terminal equipment receives network configuration information sent by the network equipment, and acquires a CSI report based on the network configuration information, wherein the CSI report comprises a part 1 and a part 2, the part 1 comprises input length information and/or output length information of a compression module, and/or interference measurement results, and the part 2 comprises compressed channel information;
s530, when the uplink feedback resources are limited, the CSI reports with low priority or high priority are discarded in priority order, and the priority order is as follows: part 1 of type 2 ≧ part 1 of type 1 ≧ part 2 of type 2 ≧ part 2 of type 1;
s540, the terminal equipment reports the CSI report to the network equipment;
and S550, the network equipment receives the CSI report.
The detailed description of the steps S510 to S550 may refer to the corresponding steps described in the foregoing fig. 2, and are not repeated herein.
The technical scheme provided by the embodiment of the application realizes the technical scheme of reporting the CSI report in the scene of supporting intelligent CSI feedback, and the CSI report comprises compressed channel information and/or interference measurement results, so that the feedback overhead of the terminal can be effectively reduced; and when uplink resources are limited, the CSI reports can be discarded according to the priority order, so that the network quality is improved.
The above description has introduced the solution of the embodiment of the present application mainly from the perspective of the method-side implementation process. It is understood that the electronic device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the functions. Those of skill in the art will readily appreciate that the present application is capable of hardware or a combination of hardware and computer software implementing the various illustrative elements and algorithm steps described in connection with the embodiments provided herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
Referring to fig. 6, fig. 6 is a block diagram of functional units of an apparatus 600 for reporting CSI provided in an embodiment of the present application, where the apparatus 600 may be a terminal device, and the apparatus 600 may also be a network device, and the apparatus 600 includes: a transceiving unit 610 and a processing unit 620.
In a possible implementation manner, the apparatus 600 is configured to execute each process and step corresponding to the terminal device in the CSI reporting method.
The transceiver unit 610 is configured to receive network configuration information sent by a network device;
the processing unit 620 is configured to obtain a CSI report based on the network configuration information, where the CSI report includes compressed channel information and/or interference measurement results;
the transceiver unit 610 is further configured to report the CSI report to the network device.
Optionally, the CSI report consists of part 1 and part 2.
Optionally, the part 1 includes the compressed channel information; the part 2 comprises a group 0 and/or a group 1, the group 0 comprising interference measurement results based on channel state information interference measurement CSI-IM, the group 1 comprising interference measurement results based on non-zero power channel state information reference signal NZP CSI-RS.
Optionally, the part 1 further comprises input length information and/or output length information of the compression module.
Optionally, the part 1 includes input length information and/or output length information of the compression module; the portion 2 comprises the compressed channel information and/or the interference measurement.
Optionally, the part 1 includes input length information and/or output length information of a compression module, and/or the interference measurement result; the portion 2 includes the compressed channel information.
The processing unit 620 is further configured to, before reporting the CSI report to the network device, if uplink feedback resources are limited, preferentially discard part 2 with a low priority or part 2 with a high priority according to a first priority order.
Optionally, the first priority order is: group 0 > group 1.
Optionally, the network configuration information is CSI report configuration information, where the CSI report configuration information includes explicit or implicit indication information, and the indication information is used to indicate a type of a CSI measurement result that an associated CSI report should include.
Optionally, the types of the CSI measurement result include type 1 and type 2, where the type 1 is a type supported by an existing standard, and the type 2 is a type supporting channel information compression.
Optionally, the CSI report configuration information further includes information of the number of receiving antennas of the terminal device.
Optionally, the processing unit 620 is further configured to determine input length information and/or output length information of the compression module according to the number information of the receiving antennas.
Optionally, the CSI report configuration information further includes input length information and/or output length information of the compression module.
Optionally, the input length information and/or the output length information of the compression module are determined according to the capability information reported by the terminal device.
Optionally, the processing unit 620 is further configured to, before reporting the CSI report to the network device, if uplink feedback resources are limited, preferentially discard some or all of the CSI reports with a low priority or the CSI reports with a high priority according to a second priority order, where the second priority order is: part 1 of type 2 ≧ part 1 of type 1 ≧ part 2 of type 2 ≧ part 2 of type 1.
In another possible implementation manner, the apparatus 600 is configured to execute the respective processes and steps corresponding to the network device in the CSI reporting method.
The transceiver unit 610 is configured to send network configuration information to a terminal device;
the transceiver unit 610 is further configured to receive a CSI report from the terminal device, where the CSI report includes compressed channel information and/or interference measurement results.
Optionally, the CSI report consists of part 1 and part 2.
Optionally, the part 1 includes the compressed channel information; the part 2 comprises a group 0 and/or a group 1, the group 0 comprising interference measurement results based on channel state information interference measurement CSI-IM, the group 1 comprising interference measurement results based on non-zero power channel state information reference signal NZP CSI-RS.
Optionally, the part 1 further includes input length information and/or output length information of the compression module.
Optionally, the part 1 includes input length information and/or output length information of the compression module; the portion 2 comprises the compressed channel information and/or the interference measurement.
Optionally, the part 1 includes input length information and/or output length information of a compression module, and/or the interference measurement result; the portion 2 includes the compressed channel information.
Optionally, the network configuration information is CSI report configuration information, where the CSI report configuration information includes explicit or implicit indication information, and the indication information is used to indicate a type of a CSI measurement result that an associated CSI report should include.
Optionally, the types of the CSI measurement result include type 1 and type 2, where the type 1 is a type supported by an existing standard, and the type 2 is a type supporting channel information compression.
Optionally, the CSI report configuration information further includes receiving antenna number information of the terminal device, where the receiving antenna number information is used by the terminal device to determine input length information and/or output length information of the compression module.
Optionally, the CSI report configuration information further includes input length information and/or output length information of the compression module.
Optionally, the processing unit 620 is configured to determine, according to the capability information reported by the terminal device, input length information and/or output length information of the compression module supported by the terminal device.
It can be understood that the functions of each program module of the CSI reporting apparatus in the embodiment of the present application may be specifically implemented according to the method in the foregoing method embodiment, and the specific implementation process may refer to the related description of the foregoing method embodiment, which is not described herein again.
It should be appreciated that the apparatus 600 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the apparatus 600 may be embodied as the terminal device and the network device in the foregoing embodiment, and the apparatus 600 may be configured to execute each procedure and/or step corresponding to the terminal device and the network device in the foregoing method embodiment, and details are not described here again to avoid repetition.
The apparatus 600 of each of the above solutions has a function of implementing corresponding steps executed by the terminal device and the network device in the above methods; the functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software comprises one or more modules corresponding to the functions; for example, the processing unit 620 may be replaced by a processor, and the transceiver unit 610 may be replaced by a transmitter and a receiver, respectively, for performing the transceiving operations and the related processing operations in the respective method embodiments.
In an embodiment of the present application, the apparatus 600 in fig. 6 may also be a chip or a chip system, for example: system on chip (SoC). Correspondingly, the transceiver unit may be a transceiver circuit of the chip, and is not limited herein.
Referring to fig. 7, fig. 7 is an electronic device according to an embodiment of the present disclosure, where the electronic device includes: one or more processors, one or more memories, one or more communication interfaces, and one or more programs; the one or more programs are stored in the memory and configured to be executed by the one or more processors.
In one possible implementation manner, the electronic device is a terminal device, and the program includes instructions for executing the following steps:
Receiving network configuration information sent by network equipment;
acquiring a CSI report based on the network configuration information, wherein the CSI report comprises compressed channel information and/or interference measurement results;
and reporting the CSI report to the network equipment.
In another possible implementation manner, the electronic device is a network device, and the program includes instructions for performing the following steps:
sending network configuration information to the terminal equipment;
and receiving a CSI report from the terminal equipment, wherein the CSI report comprises compressed channel information and/or interference measurement results.
All relevant contents of each scene related to the method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.
It will be appreciated that the memory described above may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory. For example, the memory may also store device type information.
In the embodiment of the present application, the processor of the above apparatus may be a Central Processing Unit (CPU), and the processor may also be other general processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field Programmable Gate Arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software elements in a processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.
The embodiment of the present application further provides a chip system, where the chip system includes at least one processor, a memory and an interface circuit, where the memory, the transceiver and the at least one processor are interconnected by a line, and the at least one memory stores a computer program; the computer program is executed by the processor for performing part or all of the steps of any of the methods as described in the above method embodiments.
Embodiments of the present application further provide a computer storage medium, where the computer storage medium stores a computer program for electronic data exchange, and the computer program makes a computer execute part or all of the steps of any one of the methods as described in the above method embodiments.
Embodiments of the present application also provide a computer program product comprising a non-transitory computer readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of any one of the methods as set out in the above method embodiments. The computer program product may be a software installation package.
It should be noted that for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art will recognize that the embodiments described in this specification are preferred embodiments and that acts or modules referred to are not necessarily required for this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present application.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit may be stored in a computer readable memory if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solutions of the present application, in essence or part of the technical solutions contributing to the prior art, or all or part of the technical solutions, can be embodied in the form of a software product, which is stored in a memory and includes several instructions for causing a computer device (which may be a personal computer, a server, or a TRP, etc.) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash disk, ROM, RAM, magnetic or optical disk, and the like.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the method and the core concept of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (31)

1. A method for reporting Channel State Information (CSI) is applied to terminal equipment, and the method comprises the following steps:
receiving network configuration information sent by network equipment;
acquiring a CSI report based on the network configuration information, wherein the CSI report comprises compressed channel information and/or interference measurement results;
and reporting the CSI report to the network equipment.
2. The method of claim 1, wherein the CSI report consists of part 1 and part 2.
3. The method of claim 2,
the part 1 includes the compressed channel information;
the part 2 comprises a group 0 and/or a group 1, the group 0 comprising interference measurement results based on channel state information interference measurement CSI-IM, the group 1 comprising interference measurement results based on non-zero power channel state information reference signal NZP CSI-RS.
4. A method according to claim 3, characterized in that said part 1 further comprises input length information and/or output length information of the compression module.
5. The method of claim 2,
the part 1 comprises input length information and/or output length information of the compression module;
the portion 2 comprises the compressed channel information and/or the interference measurement.
6. The method of claim 2,
the part 1 comprises input length information and/or output length information of a compression module, and/or the interference measurement result;
the portion 2 includes the compressed channel information.
7. The method according to any one of claims 2-6, further comprising:
And before reporting the CSI report to the network equipment, if uplink feedback resources are limited, preferentially discarding part 2 with low priority or high priority according to a first priority sequence.
8. The method of claim 7, wherein the first priority order is: group 0 > group 1.
9. The method according to any of claims 1-8, wherein the network configuration information is CSI report configuration information, and the CSI report configuration information includes explicit or implicit indication information for indicating the type of CSI measurement result that should be included in the associated CSI report.
10. The method of claim 9, wherein the types of the CSI measurement result comprise type 1 and type 2, wherein the type 1 is a type supported by an existing standard, and the type 2 is a type supporting channel information compression.
11. The method according to claim 9 or 10, wherein the CSI reporting configuration information further comprises information of the number of receiving antennas of the terminal device.
12. The method of claim 11, further comprising:
and according to the receiving antenna number information, the terminal equipment determines the input length information and/or the output length information of the compression module.
13. The method according to claim 9 or 10, wherein the CSI report configuration information further comprises input length information and/or output length information of the compression module.
14. The method according to claim 13, wherein the input length information and/or the output length information of the compression module is determined according to capability information reported by the terminal device.
15. The method according to any one of claims 9-14, further comprising:
before reporting the CSI report to the network device, if uplink feedback resources are limited, discarding some or all of the CSI reports with a low priority or a high priority according to a second priority order, where the second priority order is: part 1 of type 2 ≧ part 1 of type 1 ≧ part 2 of type 2 ≧ part 2 of type 1.
16. A method for reporting Channel State Information (CSI) is applied to network equipment, and the method comprises the following steps:
sending network configuration information to the terminal equipment;
and receiving a CSI report from the terminal equipment, wherein the CSI report comprises compressed channel information and/or interference measurement results.
17. The method of claim 16, wherein the CSI report consists of part 1 and part 2.
18. The method of claim 17,
the part 1 includes the compressed channel information;
the part 2 comprises a group 0 and/or a group 1, the group 0 comprising interference measurements based on channel state information interference management, CSI-IM, and the group 1 comprising interference measurements based on non-zero power channel state information reference signals, NZP, CSI-RS.
19. The method according to claim 18, characterized in that the part 1 further comprises input length information and/or output length information of the compression module.
20. The method of claim 17,
the part 1 comprises input length information and/or output length information of the compression module;
the portion 2 comprises the compressed channel information and/or the interference measurement.
21. The method of claim 17,
the part 1 comprises input length information and/or output length information of a compression module, and/or the interference measurement result;
the portion 2 includes the compressed channel information.
22. The method according to any of claims 16-21, wherein the network configuration information is CSI report configuration information, and the CSI report configuration information includes explicit or implicit indication information for indicating a type of CSI measurement result that should be included in an associated CSI report.
23. The method of claim 22, wherein the types of the CSI measurement result comprise type 1 and type 2, wherein the type 1 is a type supported by an existing standard, and the type 2 is a type supporting channel information compression.
24. The method according to claim 22 or 23, wherein the CSI report configuration information further comprises receiving antenna number information of the terminal device, wherein the receiving antenna number information is used for the terminal device to determine input length information and/or output length information of the compression module.
25. The method according to claim 22 or 23, wherein the CSI report configuration information further comprises input length information and/or output length information of the compression module.
26. The method of claim 25, further comprising:
and the network equipment determines the input length information and/or the output length information of the compression module supported by the terminal equipment according to the capability information reported by the terminal equipment.
27. The device for reporting CSI is applied to a terminal device, and comprises:
the receiving and sending unit is used for receiving network configuration information sent by the network equipment;
A processing unit, configured to obtain a CSI report based on the network configuration information, where the CSI report includes compressed channel information and/or interference measurement results;
the transceiver unit is further configured to report the CSI report to the network device.
28. An apparatus for reporting CSI, applied to a network device, the apparatus comprising:
the receiving and sending unit is used for sending network configuration information to the terminal equipment;
the transceiver unit is further configured to receive a CSI report from the terminal device, where the CSI report includes compressed channel information and/or interference measurement results.
29. An electronic device, characterized in that the electronic device comprises a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-15 or the steps in the method of any of claims 16-26.
30. A chip system, the chip system comprising at least one processor, a memory and an interface circuit, the memory, the transceiver and the at least one processor being interconnected by a line, the at least one memory having a computer program stored therein; the computer program, when executed by the processor, implements the method of any of claims 1-15 or the method of any of claims 16-26.
31. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the steps of the method according to any one of claims 1-15 or the steps of the method according to any one of claims 16-26.
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